Dear, Have you gone through null space effect between N-S poles. I did some experiments on this. Moving from idle condition requires almost equal to the force required to move from null(neutral space)space.

Have you encountered this problem? research on few patents on permanent magnet motors. How they achieved this problem. Lot of fake videos on youtube rounding now, dont believe those. I succeeded by masking N or S pole field of opposite side(i.e outer magnets in your diagram) to zero(almost). For nullifying you need good magnetic conductors. Search for shielding magnetic field. This tech generally used for speakers and magnets placed on electronic circuits. Try hard you will rock. where are from basically? if are from india, u can reach me on +919989438487